pub(crate) enum MacroRulesScope<'a> {
    Empty,
    Binding(&'a MacroRulesBinding<'a>),
    Invocation(LocalExpnId),
}
Expand description

The scope introduced by a macro_rules! macro. This starts at the macro’s definition and ends at the end of the macro’s parent module (named or unnamed), or even further if it escapes with #[macro_use]. Some macro invocations need to introduce macro_rules scopes too because they can potentially expand into macro definitions.

Variants§

§

Empty

Empty “root” scope at the crate start containing no names.

§

Binding(&'a MacroRulesBinding<'a>)

The scope introduced by a macro_rules! macro definition.

§

Invocation(LocalExpnId)

The scope introduced by a macro invocation that can potentially create a macro_rules! macro definition.

Trait Implementations§

source§

impl<'a> Clone for MacroRulesScope<'a>

source§

fn clone(&self) -> MacroRulesScope<'a>

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl<'a> Debug for MacroRulesScope<'a>

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
source§

impl<'a> Copy for MacroRulesScope<'a>

Auto Trait Implementations§

§

impl<'a> !RefUnwindSafe for MacroRulesScope<'a>

§

impl<'a> !Send for MacroRulesScope<'a>

§

impl<'a> !Sync for MacroRulesScope<'a>

§

impl<'a> Unpin for MacroRulesScope<'a>

§

impl<'a> !UnwindSafe for MacroRulesScope<'a>

Blanket Implementations§

source§

impl<T> Any for Twhere T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for Twhere T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for Twhere T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for Twhere U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> ToOwned for Twhere T: Clone,

§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T, U> TryFrom<U> for Twhere U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 16 bytes

Size for each variant:

  • Empty: 0 bytes
  • Binding: 12 bytes
  • Invocation: 4 bytes